CN108648249A - A kind of image rendering method, device and intelligent wearable device - Google Patents
A kind of image rendering method, device and intelligent wearable device Download PDFInfo
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Abstract
The invention discloses a kind of image rendering methods, including call figure accelerating engine, and corresponding stacking element is selected to be added separately in each figure layer out of stacking element to be shown；Start figure accelerating engine and carry out image rendering operations, obtains the rendering output of this operation；Judge whether stacking element to be shown, if in the presence of, figure accelerating engine is called again, the rendering output of last time operation is added in a figure layer, it selects several stacking elements to be added separately in remaining figure layer out of remaining stacking element to be shown, starts figure accelerating engine and carry out image rendering；If stacking element to be shown is not present, by the current image for rendering output and being completed as rendering.This invention simplifies programmings, directly the limited figure accelerating engine of function can be utilized to complete the image rendering scene of various complexity, expand application range；Invention additionally discloses a kind of device and intelligent wearable device based on the above method.
Description
Technical field
The present invention relates to technical field of image processing, more particularly to a kind of image rendering method.The invention further relates to one
Image rendering device and intelligent wearable device of the kind based on the above method.
Background technology
It is continuously increased recently as embedded device (Intelligent bracelet, smartwatch etc.) function, equipment is to be shown
Content also becomes increasingly complex, and the processing capacity of embedded MCU is not universal strong.So increasing to aobvious in order to meet
Show the requirement of function, while reducing the load of MCU to reduce power consumption, extend the cruise duration of equipment, many MCU are integrated with figure
Shape accelerating engine is used for rendering content to be shown, and the process of image rendering is that multiple stacking elements are added to figure to add
After in the figure layer of fast engine, multiple figure layers are carried out with the process of the process of hybrid operation.
However, being limited to the conditions such as the volume of embedded device, cost and power consumption, this figure accelerating engine can be provided
Function still compare limitation, such as：The figure layer number of offer is fewer；Each figure layer can only provide simple function --- it renders
Single shape is (such as：Rectangle, circle etc.), the stacking element of each figure layer storage is only capable of as fixed picture format (such as：Rgb format,
Yuv format etc.) or set form font is (such as：4 color depths, 8 color depths etc.) etc..This limited figure of function
Accelerating engine will be helpless for the case where many more complicated (it is many that element is laminated) or MCU is needed to do many places
Science and engineering is made.
In order to realize that these complicated scenes, present widespread practice are by way of software, writing program in advance will
Same type or the element of position overlapping are parsed into a memory cache module, then integrally regard this memory buffer module as one
A display pel is put into a figure layer, and programming is complex, and the feelings less in the element that same type or position are overlapped
Under condition, can not the function of image rendering directly be completed using the limited figure accelerating engine of function, limited degree is big.
Therefore, how a kind of image rendering method, device that can simplify programming reduction using limited degree is provided
And intelligent wearable device is the current problem to be solved of those skilled in the art.
Invention content
The object of the present invention is to provide a kind of image rendering methods, can carry out stacking element in not additional designs program
On the basis of parsing combination, a large amount of stacking members are directly realized by using the limited figure accelerating engine of function in current embedded system
The image rendering operations of element, expand the application range of figure accelerating engine；It is a further object of the present invention to provide one kind to be based on
The image rendering device and intelligent wearable device of the above method.
In order to solve the above technical problems, the present invention provides a kind of image rendering methods, including：
Step s1：Figure accelerating engine is called for the first time, and corresponding stacking element point is selected out of stacking element to be shown
It is not added in each figure layer of the figure accelerating engine, enters step s2；
Step s2：Start the figure accelerating engine and image rendering behaviour is carried out to the stacking element in each figure layer
Make, obtains the rendering output of this operation, enter step s3；
Step s3：Judge whether stacking element to be shown, and if it exists, enter step s4, if being not present, will work as
The rendering output of preceding operation is as the image after the completion of rendering；
Step s4：The figure accelerating engine is called again, and the rendering output of last time operation, which is added to the figure, to be added
In one figure layer of fast engine, and several stacking elements are selected to be added separately to institute out of remaining stacking element to be shown
It states in the remaining figure layer of figure accelerating engine, enters step s2.
Preferably, further include before step s1：
Stacking element all to be shown is ranked up；
Correspondingly, in the step s1 and the step s4, according to the ranking results of the stacking element to be shown,
Element is laminated in sequential selection accordingly successively out of remaining stacking element to be shown, and the stacking element of selection is added
To corresponding figure layer.
Preferably, in the step s1 and the step s4, the stacking element of selection is added to corresponding figure layer
It is interior, further include later：
According to the sequence of the stacking element to be shown, to each figure layer progress sequence in the figure accelerating engine
Number；
Correspondingly, the process of the step s2 is specially：
According to the number of the figure layer, two figure layers not rendered of sequential selection successively, to it includes stacking element
Image rendering operations are carried out, this rendering result is obtained；
The number order for continuing the figure layer selects next figure layer not rendered, by it includes stacking element with it is upper
Secondary rendering result carries out image rendering operations, obtains this rendering result；This step operation is repeated, until in whole figure layers
Stacking element, which renders, to be finished.
Preferably, described image Rendering operations are specially Alpha hybrid operations.
Preferably, in step s4, the rendering output of last time operation is added to a figure layer of the figure accelerating engine
Before interior, further include：
By the picture format of the rendering output of last time operation, is converted to the figure accelerating engine input side and receives the wash with watercolours
The picture format that the figure layer of dye output is supported.
Preferably, two stacking elements carry out Alpha hybrid operations, and the process for obtaining mixing resultant is specially：
By mixed relationship formula, by each channel components of each pixel to be mixed in two stacking elements to be mixed
It is mixed successively with Alpha values, obtains the mixing resultant of each pixel to be mixed；The channel components include red point
Magnitude, blue color component value and green component values；
The mixed relationship formula is specially：
Output α=Dst α+Src α-Dst α Src α
OutputP：The value of P channel component in the mixing resultant of the pixel to be mixed；P is red blue or green
Color；
Outputα：Alpha channel values in the mixing resultant of the pixel to be mixed；
DstP：The P channel component value of the pixel to be mixed in purpose figure layer；
SrcP：The P channel component value of the pixel to be mixed in the figure layer of source；
Dstα：The Alpha values of the pixel to be mixed in the purpose figure layer；
Srcα：The Alpha values of the pixel to be mixed in the source figure layer.
Preferably, the stacking element includes font or geometric figure.
Preferably, the figure accelerating engine is 2D figure accelerating engines.
In order to solve the above technical problems, the present invention also provides a kind of image rendering devices, including：
First figure layer add module selects phase for calling figure accelerating engine for the first time out of stacking element to be shown
It answers a stacking element to be added separately in each figure layer of the figure accelerating engine, triggers engine calling module；
The engine calling module, for start the figure accelerating engine to the stacking element in each figure layer into
Row image rendering operations obtain the rendering output of this operation；Trigger judgment module；
The judgment module, for judging whether stacking element to be shown, and if it exists, triggering the second figure layer addition
Module, if being not present, by the rendering output of current operation as the image after the completion of rendering；
The second figure layer add module, for calling the figure accelerating engine again, the rendering that last time is operated is defeated
Go out in a figure layer for being added to the figure accelerating engine, and several layers are selected out of remaining stacking element to be shown
Folded element is added separately in the remaining figure layer of the figure accelerating engine, triggers the engine calling module.
In order to solve the above technical problems, the present invention also provides a kind of intelligent wearable devices, including：
Memory, for storing computer program；
Processor realizes the step of the image rendering method as described in any of the above item when for executing the computer program
Suddenly.
The present invention provides a kind of image rendering methods, call figure accelerating engine several times, call figure to accelerate every time
When engine, input addition when running the output after preceding calling figure shape accelerating engine as this figure accelerating engine
To a figure layer, and the stacking element of corresponding number is selected to be added to remaining figure layer out of remaining stacking element to be shown
It is interior, image rendering operations then are carried out to the content of each figure layer, repeat aforesaid operations, until all stacking elements to be shown
It renders until finishing.As it can be seen that the present invention by the way of it will export and feed back to input, can utilize in current embedded system
The limited figure accelerating engine of function is directly realized by the image rendering operations of a large amount of stacking elements, to complete the figure of various complexity
As render scenes, the parsing combination of stacking element is carried out without additional designs program, is simplified in image rendering process
Programming, and reduce limited degree of the figure accelerating engine when carrying out image rendering application, expand figure acceleration
The application range of engine.The present invention also provides a kind of image rendering device and intelligent wearable device based on the above method, also has
There is above-mentioned advantage.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of flow chart of the process of image rendering method provided by the invention；
Fig. 2 is a kind of schematic diagram of the specific embodiment of image rendering method provided by the invention；
Fig. 3 is a kind of schematic diagram of another specific embodiment of image rendering method provided by the invention；
Fig. 4 is a kind of structural schematic diagram of image rendering device provided by the invention.
Specific implementation mode
Core of the invention is to provide a kind of image rendering method, can carry out stacking element in not additional designs program
On the basis of parsing combination, a large amount of stacking members are directly realized by using the limited figure accelerating engine of function in current embedded system
The image rendering operations of element, expand the application range of figure accelerating engine；Another core of the present invention is to provide one kind and is based on
The image rendering device and intelligent wearable device of the above method.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Shown in Figure 1 the present invention provides a kind of image rendering method, Fig. 1 is a kind of image wash with watercolours provided by the invention
The flow chart of the process of dyeing method；This method includes：
Step s1：Figure accelerating engine is called for the first time, and corresponding stacking element point is selected out of stacking element to be shown
It is not added in each figure layer of figure accelerating engine, enters step s2；
Wherein, it is provided with multiple figure layers in figure accelerating engine, a stacking element can be added in each figure layer；Figure layer
The type for the stacking element that can be added in several and each figure layer is related with the type of figure accelerating engine, some figure layers may
The stacking element of fixed type can be only added, and therefore the type that some figure layers may not limit stacking element is selecting
When stacking element to be shown is added in each figure layer of figure accelerating engine, not only need corresponding according to the selection of figure layer number
The stacking element of number will also select the stacking element of suitable type being added in corresponding figure layer.Certainly, figure layer number with
And the type of stacking element that can add of each figure layer is of the invention and is not specially limited.
Step s2：Start figure accelerating engine and image rendering operations are carried out to the stacking element in each figure layer, obtains this
The rendering of secondary operation exports, and enters step s3；
It, can be to the stacking element in itself each figure layer according to preset image rendering algorithm after figure accelerating engine starts
Operation is carried out, a stacking element, the rendering as this operation can be exported after the completion of the operation carried out to multiple stacking elements
Output.
Step s3：Judge whether stacking element to be shown, and if it exists, enter step s4, if being not present, will work as
The rendering output of preceding operation is as the image after the completion of rendering；
It should be noted that after part stacking element to be shown is added in the figure layer of figure accelerating engine, wait showing
Then no longer there is the stacking element after aforementioned addition in the stacking element list shown, or even if present in stacking element list,
Also had been marked as it is processed, for being distinguished with stacking element to be shown.
Step s4：Figure accelerating engine is called again, and the rendering output of last time operation is added to figure accelerating engine
In one figure layer, and selects several stacking elements to be added separately to figure acceleration out of remaining stacking element to be shown and draw
In the remaining figure layer held up, s2 is entered step.
It is understood that it is a stacking member to carry out the output after image rendering operations due to each figure accelerating engine
Element, therefore the input when output can call figure accelerating engine as next time, and it is defeated to add it to figure accelerating engine
Enter in a figure layer of side.
In addition, accelerating selecting several stacking elements to be added separately to figure out of remaining stacking element to be shown
When in the remaining figure layer of engine, it is possible that the case where remaining stacking element to be shown is less than remaining figure layer, at this time will
All remaining stacking element to be shown selects suitable figure layer to add respectively.
It is understood that the present invention calls again using the output result of figure accelerating engine as a part for its input
The engine carries out operation, if it is desired, repeatedly recursive call figure accelerating engine.It by this method, theoretically can be real
Image rendering operations between now unlimited figure layer.In this way, can with the limited figure accelerating engine of function come realize function compared with
For the effect of powerful figure accelerating engine, for example, can with only support the figure accelerating engine of less figure layer (such as 4 layers) come
Realize the function of supporting the figure accelerating engine compared with multi-layer image (such as 8 layers).This programme makes the function of figure accelerating engine obtain
Play to the greatest extent, especially in the complicated display effect of processing, it is no longer necessary to write will stacking element according to type and
Position carries out the program of parsing combination, since this subprogram is needed by MCU processing originally, therefore this portion of the bright simplification of this application for issue
After branch, the participation of MCU can be reduced, the load of MCU is greatly reduced, improves the performance of image rendering device, reduces power consumption.
Preferably, further include before step s1：
Stacking element all to be shown is ranked up；
Correspondingly, in step s1 and step s4, according to the ranking results of stacking element to be shown, wait showing from remaining
Element is laminated in sequential selection accordingly successively in the stacking element shown, and the stacking element of selection is added to corresponding figure layer
It is interior.
It is understood that due to during carrying out image rendering to stacking element, need each figure layer by suitable
Sequence is overlapped, and therefore, each stacking element sequence residing in figure layer is different, and the rendering result finally exported is also different.
Therefore in the present embodiment, stacking element is ranked up in advance, subsequently in the process that stacking element to be shown is added to figure layer
In, then select stacking element successively according to clooating sequence；Under this mode, the mistake of each figure layer selection stacking element is simplified
Journey avoids the case where stacking collated unrest of element makes user need additionally to manually select stacking element.
It should be noted that when carrying out stacking element sequence, user needs according to the rendering result wanted to layer
Folded element is ranked up successively, still, since some figure layers can limit the type of itself addible stacking element,
During being ranked up, it is also desirable to consider stacking element type and figure layer feature, avoid in subsequently selected stacking element
When, the situation that element is added in type mismatch figure layer will be laminated and occur.
Certainly, in another embodiment, stacking element to be shown can not be also ranked up, but pre-sets sieve
Choosing rule, the screening rule allow the stacking element type of addition to carry out according to the rendering result and each figure layer wanted
Design, in step s1 and step s4 when selection stacking element, according to the screening rule out of remaining stacking element to be shown,
The suitable stacking element of selection is added in corresponding figure layer.
It is further known that in step s1 and step s4, the stacking element of selection is added in corresponding figure layer, later also
Including：
According to the sequence of stacking element to be shown, serial number is carried out to each figure layer in figure accelerating engine；
Correspondingly, the process of step s2 is specially：
According to the number of figure layer, two figure layers not rendered of sequential selection successively, to it includes the progress of stacking element
Image rendering operations obtain this rendering result；
The number order for continuing figure layer selects next figure layer not rendered, by it includes stacking element and last time
Rendering result carries out image rendering operations, obtains this rendering result；This step operation is repeated, until the stacking in whole figure layers
Element is rendered and is finished.
For example, if including 4 figure layers (0~3), carry out image rendering operations, rendering knot to figure layer 0 and figure layer 1 first
Fruit is denoted as figure layer 1 ', then figure layer 1 ' and figure layer 2 are carried out image rendering operations, and rendering result is denoted as figure layer 2 ', finally by figure layer
2 ' carry out image rendering operations with figure layer 3 obtains final output.
It is understood that figure accelerating engine includes multiple figure layers, each figure layer there may be original numbers may also
It is not present, if there are original number, each stacking element is added to according to the overlay order of itself meets itself format
After in figure layer, the overlay order of the original number of figure layer and self-contained stacking element may be not consistent, for example, it is assumed that having
Four figure layers 0~3, the stacking element that overlay order is 1 is since format issues may be only capable of being added to figure layer 3, in this way follow-up
During being rendered, cannot successively it be rendered according to figure layer number order, but firstly the need of according to stacking element
Overlay order goes to search corresponding figure layer, then carries out Rendering operations again, and image rendering speed is slow.If original volume is not present in figure layer
If number, can also there be problem above, need to carry out figure layer lookup and screening before rendering.And in the present embodiment, member will be laminated
After element is added to suitable figure layer according to sequence, sequence is carried out to each figure layer according to the overlay order of stacking element again and has been compiled
Number so that figure layer variation with it includes the stacking superposition order of element it is identical, for example, overlay order for 1 stacking element
In figure layer 0, so that when follow-up rendering, can Rendering operations be directly carried out successively according to the number order of figure layer, without
It needs that figure layer is searched or screened again, improves image rendering speed.
If in addition, there are original numbers for the figure layer for including in figure accelerating engine, and each figure layer can support and itself
If the stacking element of the corresponding overlay order of number (such as figure layer can support all kinds of stacking elements), then preferentially according to will be laminated
Element is added in itself corresponding figure layer of sequence.Shown in Fig. 2, Fig. 2 is a kind of image rendering provided by the invention
The schematic diagram of the specific embodiment of method is comprising multiple stacking elements 1,2,3,4,5,6,7, figure accelerating engine include 4
A figure layer 0~3；In this case, since the overlay order of stacking element has equalized to the figure layer itself added number, therefore not
It is needed again to each figure layer into line renumbering.
Certainly, several preferred embodiments be these are only, specifically whether to each figure layer into line renumbering, the present invention does not make
It is particularly limited to.
In a preferred embodiment, image rendering operations are specially Alpha hybrid operations.
Alpha mixing is applied to ARGB (Alpha, Red, Green, Blue) color format, and ARGB is a kind of color mode,
Namely RGB (RGB color model, primaries pattern) color mode affix Alpha (transparency) channel, is common in
The storage organization of 8,16,18,32 bitmaps.
So-called Alpha mixing is exactly to mix source pixel and object pixel according to Alpha values in fact, and briefly this is
A technique for realizing translucent display effect；Wherein, Alpha values are the transparence value of pixel, and range is 0~1.Alpha
In mixed process, source pixel and object pixel can be mixed, in mixed process can to the Alpha values of the two pixels and
A certain channel components value (red color component value, green component values, blue color component value) carries out certain operation, obtains output pixel and exists
The numerical value of the channel components.
Certainly, the image rendering operations in the present invention can also be other kinds of Rendering operations, such as according to image
The center of circle and radius carry out round Rendering operations etc., and specific image rendering operations type can be depending on actual demand, the present invention
It is not construed as limiting.
It is further known that two stacking elements carry out Alpha hybrid operations, the process for obtaining mixing resultant is specially：
By mixed relationship formula, by each channel components of each pixel to be mixed in two stacking elements to be mixed
It is mixed successively with Alpha values, obtains the mixing resultant of each pixel to be mixed；Channel components include red color component value, indigo plant
Colouring component value and green component values；
Mixed relationship formula is specially：
Output α=Dst α+Src α-Dst α Src α
OutputP：The value of P channel component in the mixing resultant of pixel to be mixed；P is red blue or green；
Outputα：Alpha channel values in the mixing resultant of pixel to be mixed；
DstP：The P channel component value of pixel to be mixed in purpose figure layer；
SrcP：The P channel component value of pixel to be mixed in the figure layer of source；
Dstα：The Alpha values of pixel to be mixed in purpose figure layer；
Srcα：The Alpha values of pixel to be mixed in the figure layer of source.
Wherein, since during carrying out Alpha hybrid operations, the sequence of to be mixed two figure layers is to require
, for example, figure layer 1 is superimposed upon in figure layer 0, and figure layer 0 is superimposed upon in figure layer 1, obtained mixing resultant is difference, therefore
Which clear figure layer is needed to be in upper layer (being used as source figure layer), which figure layer is in lower layer's (i.e. figure layer as a purpose).
I.e. during carrying out Alpha hybrid operations, need to be mixed three times respectively to obtain final mixed pixel
Three channel components (red component, blue component and green component).
In a preferred embodiment, in step s4, the rendering output of last time operation is added to figure accelerating engine
Before in one figure layer, further include：
By the picture format of the rendering output of last time operation, it is defeated to be converted to the figure accelerating engine input side reception rendering
The picture format that the figure layer gone out is supported.
Shown in Figure 3, Fig. 3 is a kind of signal of another specific embodiment of image rendering method provided by the invention
Figure.
It is understood that the input due to the present invention by the rendering output of last time as Rendering operations next time, and scheme
The element format that shape accelerating engine output end and input terminal are supported may it is identical may also be different, therefore, in order to ensure to input
In the case of supporting that format is different with output, the present invention also can be realized normally, it is therefore desirable to export rendering into row format tune
It is whole, so that the image after adjustment is obtained the support of input side.
Wherein, the specific can be that carrying out Format adjusting to image by the channels Alpha or other Color Channels, such as
The conversion of RGB888, RGB565, BGR888 etc. format.Here the mode for carrying out format conversion, inputs with figure accelerating engine
End is related with the Format Type that output end is supported, the present invention is not particularly limited this.
For example, each figure layer of figure accelerating engine supports following color format and operation：RGB565, RGB888,
BGR888, ARGB8888, PARGB8888, ARGB6666, ARGB8565, PARGB6666, PARGB8565, YUYV422 and anti-saw
Tooth font, Rectangle filling.The output format that figure accelerating engine is supported has：RGB565, RGB888, BGR888, ARGB8888 are (defeated
Except when entering to have PARGB formats), PARGB8888.As it can be seen that all output format of figure accelerating engine all can serve as to input,
It adjusts to output data so being not required here, it is only necessary to the specified format and output format for receiving the figure layer for rendering output
It is identical.But if there is no its output format supported in the input format that figure accelerating engine is supported, it is necessary to do phase
The processing answered.It is exemplified below：If figure accelerating engine only supports the input of ARGB formats and the output of RBG formats, it is necessary to
The channels Alpha are added in the core buffer of output can make by oneself by RBG format conversions at ARGB formats during conversion
The Alpha values of adopted each pixel, i.e., the transparency of each pixel can be used as inputting after conversion.
In addition, it should be noted that since the input terminal of figure accelerating engine receives the only figure layer for rendering and exporting,
Be assumed to be figure layer 0, figure layer 0 may only support the division format in the data format that figure accelerating engine input terminal is supported, then this
Even if when figure accelerating engine output end it is identical as the data format that input terminal is supported, it is also desirable to the data format energy of specified output
Access the support of figure layer 0.For example, figure layer 0 supports tri- kinds of formats of BGR888, ARGB8888 and PARGB8888, input terminal to support
Five kinds of formats of RGB565, RGB888, BGR888, ARGB8888 and PARGB8888, therefore the data lattice for needing appointed output terminal to export
Formula is necessary for any one of three kinds of formats that figure layer 0 is supported.Certainly, if output end does not support the data that figure layer 0 is supported
Format then needs to carry out format conversion.
Specifically, stacking element of the present invention includes font or geometric figure.Font can be grayscale font, such as 4
Position color depth, 8 color depths etc.；Geometric figure can be rectangle, circle etc.；And stacking element can also limit the lattice of image
Formula, such as can be RGB three primary colors format-pattern, yuv format image etc..Certainly, stacking element can also be extended formatting or
The image of other patterns, this is not limited by the present invention.
Specifically, above-mentioned figure accelerating engine is 2D figure accelerating engines.It is, of course, also possible to add for other kinds of image
Fast engine, this is not limited by the present invention.
The present invention provides a kind of image rendering methods, call figure accelerating engine several times, call figure to accelerate every time
When engine, input addition when running the output after preceding calling figure shape accelerating engine as this figure accelerating engine
To a figure layer, and the stacking element of corresponding number is selected to be added to remaining figure layer out of remaining stacking element to be shown
It is interior, image rendering operations then are carried out to the content of each figure layer, repeat aforesaid operations, until all stacking elements to be shown
It renders until finishing.As it can be seen that the present invention by the way of it will export and feed back to input, can utilize in current embedded system
The limited figure accelerating engine of function is directly realized by the image rendering operations of a large amount of stacking elements, to complete the figure of various complexity
As render scenes, the parsing combination of stacking element is carried out without additional designs degree, is simplified in image rendering process
Programming, and reduce limited degree of the figure accelerating engine when carrying out image rendering application.
Shown in Figure 4 the present invention also provides a kind of image rendering device, Fig. 4 is a kind of image provided by the invention
The structural schematic diagram of rendering device.The system includes：
First figure layer add module selects phase for calling figure accelerating engine for the first time out of stacking element to be shown
It answers a stacking element to be added separately in each figure layer of figure accelerating engine, triggers engine calling module；
Engine calling module carries out image rendering behaviour for starting figure accelerating engine to the stacking element in each figure layer
Make, obtains the rendering output of this operation；Trigger judgment module；
Judgment module, for judging whether stacking element to be shown, and if it exists, the second figure layer of triggering adds mould
Block, if being not present, by the rendering output of current operation as the image after the completion of rendering；
The rendering output of last time operation is added to by the second figure layer add module for calling figure accelerating engine again
In one figure layer of figure accelerating engine, and several stacking elements are selected to add respectively out of remaining stacking element to be shown
It adds in the remaining figure layer of figure accelerating engine, triggers engine calling module.
The present invention provides a kind of image rendering devices, call figure accelerating engine several times, call figure to accelerate every time
When engine, input addition when running the output after preceding calling figure shape accelerating engine as this figure accelerating engine
To a figure layer, and the stacking element of corresponding number is selected to be added to remaining figure layer out of remaining stacking element to be shown
It is interior, image rendering operations then are carried out to the content of each figure layer, repeat aforesaid operations, until all stacking elements to be shown
It renders until finishing.As it can be seen that the present invention by the way of it will export and feed back to input, can utilize in current embedded system
The limited figure accelerating engine of function is directly realized by the image rendering operations of a large amount of stacking elements, to complete the figure of various complexity
As render scenes, the parsing combination of stacking element is carried out without additional designs degree, is simplified in image rendering process
Programming, and reduce limited degree of the figure accelerating engine when carrying out image rendering application.
The present invention also provides a kind of intelligent wearable devices, including：
Memory, for storing computer program；
Processor, when for executing computer program the step of the realization such as image rendering method of any of the above item.
Wherein, intelligent wearable device here can be Intelligent bracelet or wrist-watch etc., and certainly, the present invention does not limit intelligence
The concrete type of wearable device.
Present invention is preferably used in the systems in small intelligent wearable device, due to the MCU processing of small intelligent wearable device
Ability is not high enough, uses the present invention that can reduce the load of MCU to reduce power consumption, extends the cruise duration of intelligent wearable device.
Certainly, other kinds of intelligent wearable device can also apply the solution of the present invention, and this is not limited by the present invention.
Above several specific implementation modes are only the preferred embodiment of the present invention, and above several specific embodiments can be with
Arbitrary combination, the embodiment obtained after combination is also within protection scope of the present invention.It should be pointed out that for the art
For those of ordinary skill, relevant speciality technical staff deduced out in the case where not departing from spirit of that invention and concept thereof other change
Into and variation, should all be included in the protection scope of the present invention.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so description is fairly simple, related place is said referring to method part
It is bright.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only that
A little elements, but also include other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (10)
1. a kind of image rendering method, which is characterized in that including：
Step s1：Figure accelerating engine is called for the first time, and corresponding stacking element is selected to add respectively out of stacking element to be shown
It adds in each figure layer of the figure accelerating engine, enters step s2；
Step s2：Start the figure accelerating engine and image rendering operations are carried out to the stacking element in each figure layer, obtains
To the rendering output of this operation, s3 is entered step；
Step s3：Judge whether stacking element to be shown, and if it exists, enter step s4, if being not present, will currently grasp
The rendering output of work is as the image after the completion of rendering；
Step s4：The figure accelerating engine is called again, and the rendering output of last time operation, which is added to the figure acceleration, draws
In the figure layer held up, and several stacking elements are selected to be added separately to the figure out of remaining stacking element to be shown
In the remaining figure layer of shape accelerating engine, s2 is entered step.
2. according to the method described in claim 1, it is characterized in that, further including before step s1：
Stacking element all to be shown is ranked up；
Correspondingly, in the step s1 and the step s4, according to the ranking results of the stacking element to be shown, from surplus
Element is laminated in sequential selection accordingly successively in remaining stacking element to be shown, and the stacking element of selection is added to phase
In the figure layer answered.
3. according to the method described in claim 2, it is characterized in that, in the step s1 and the step s4, by the institute of selection
It states stacking element to be added in corresponding figure layer, further includes later：
According to the sequence of the stacking element to be shown, to each figure layer carry out sequence volume in the figure accelerating engine
Number；
Correspondingly, the process of the step s2 is specially：
According to the number of the figure layer, two figure layers not rendered of sequential selection successively, to it includes the progress of stacking element
Image rendering operations obtain this rendering result；
The number order for continuing the figure layer selects next figure layer not rendered, by it includes stacking element and last time
Rendering result carries out image rendering operations, obtains this rendering result；This step operation is repeated, until the stacking in whole figure layers
Element is rendered and is finished.
4. according to claim 1-3 any one of them methods, which is characterized in that described image Rendering operations are specially Alpha
Hybrid operation.
5. according to the method described in claim 4, it is characterized in that, in step s4, the rendering output of last time operation is added to
Before in one figure layer of the figure accelerating engine, further include：
By the picture format of the rendering output of last time operation, it is defeated to be converted to the figure accelerating engine input side reception rendering
The picture format that the figure layer gone out is supported.
6. according to the method described in claim 4, it is characterized in that, two stacking elements progress Alpha hybrid operations, obtain
Process to mixing resultant is specially：
By mixed relationship formula, successively by each channel components of each pixel to be mixed in two stacking elements to be mixed
It is mixed with Alpha values, obtains the mixing resultant of each pixel to be mixed；The channel components include red component
Value, blue color component value and green component values；
The mixed relationship formula is specially：
Output α=Dst α+Src α-Dst α Src α
OutputP：The value of P channel component in the mixing resultant of the pixel to be mixed；P is red blue or green；
Outputα：Alpha channel values in the mixing resultant of the pixel to be mixed；
DstP：The P channel component value of the pixel to be mixed in purpose figure layer；
SrcP：The P channel component value of the pixel to be mixed in the figure layer of source；
Dstα：The Alpha values of the pixel to be mixed in the purpose figure layer；
Srcα：The Alpha values of the pixel to be mixed in the source figure layer.
7. according to claim 1-3 any one of them methods, which is characterized in that the stacking element includes font or geometric graph
Shape.
8. according to claim 1-3 any one of them methods, which is characterized in that the figure accelerating engine accelerates for 2D figures
Engine.
9. a kind of image rendering device, which is characterized in that including：
First figure layer add module selects corresponding for calling figure accelerating engine for the first time out of stacking element to be shown
Stacking element is added separately in each figure layer of the figure accelerating engine, triggers engine calling module；
The engine calling module carries out figure for starting the figure accelerating engine to the stacking element in each figure layer
As Rendering operations, the rendering output of this operation is obtained；Trigger judgment module；
The judgment module, for judging whether stacking element to be shown, and if it exists, the second figure layer of triggering adds mould
Block, if being not present, by the rendering output of current operation as the image after the completion of rendering；
The second figure layer add module adds the rendering output of last time operation for calling the figure accelerating engine again
It adds in a figure layer of the figure accelerating engine, and selects several stacking members out of remaining stacking element to be shown
Element is added separately in the remaining figure layer of the figure accelerating engine, triggers the engine calling module.
10. a kind of intelligent wearable device, which is characterized in that including：
Memory, for storing computer program；
Processor realizes such as claim 1 to 8 any one of them image rendering method when for executing the computer program
The step of.
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